AIMentor — AI Expertise Learning Platform

Untimed. Answers are graded when you submit, with explanations and spaced-repetition scheduling.

Question 1easy
What does an `async def` function return when called?
The final value directlyA coroutine (Python's analog of a Promise) that must be awaitedNone, alwaysA thread
Question 2easy
Which asyncio call is the equivalent of JavaScript's `Promise.all([...])`?
asyncio.sleep(...)asyncio.run(...)asyncio.gather(...)asyncio.wait_for(...)
Question 3medium
What happens if you call an async function but forget to await it?
It runs synchronouslyIt does not run; you get a coroutine object and a 'never awaited' warningIt raises a SyntaxErrorIt blocks the event loop forever
Question 4medium
For which kind of work does async/await actually help?
CPU-bound work (heavy computation)I/O-bound work (network, disk, database calls)Both equallyNeither
Question 5medium
Why use httpx's AsyncClient instead of the requests library inside async code?
requests is deprecatedrequests is synchronous and blocks the event loop; httpx AsyncClient is awaitablehttpx is faster at parsing JSONrequests cannot send headers
Question 6easy
In FastAPI, what does `@app.get('/health')` do?
Sends a GET request to /healthRegisters the decorated function as the handler for GET /healthCreates a database tableDefines a pydantic model
Question 7medium
In `async def get_topic(topic_id: str, verbose: bool = False)` on route `/topics/{topic_id}`, where does `verbose` come from?
The request bodyThe URL pathThe query string (e.g. ?verbose=true), as an optional parameterA request header
Question 8medium
What role does a pydantic BaseModel play in a FastAPI endpoint?
It renders HTMLIt validates and parses the request/response data from its typed fields (like zod)It manages the event loopIt replaces uvicorn
Question 9medium
A client POSTs `{ "top_k": "four" }` to an endpoint expecting `top_k: int`. What does FastAPI do?
Silently coerces it to 0Returns a 422 Unprocessable Entity with a validation errorCrashes with a 500Accepts it as the string 'four'
Question 10hard
What is the main benefit of injecting a resource via `Depends(get_settings)` instead of importing it directly?
It runs fasterIt is declared once, reused across handlers, and can be overridden in testsIt makes the endpoint synchronousIt encrypts the settings
Question 11hard
Which statements about `asyncio.run(main())` are true? (Select all that apply)
It starts the event loop and runs the coroutine to completionIt is typically called once at the program's entry pointYou should call it inside every async functionIt is the manual loop-entry that JS does implicitly for module top-level await
Select all that apply.
Question 12medium
What does `async with httpx.AsyncClient() as client:` provide?
A synchronous clientA context manager that opens the client and awaits its cleanup on exitA new event loopA pydantic model
Question 13medium
Name the ASGI server command commonly used to run a FastAPI app in development (the program name is enough).
Question 14hard
One word: async gives you ______ (overlapping I/O waits), not true parallelism of CPU work.

0 / 14 answered

Async & APIs with FastAPI — Practice quiz